GD32F310 datasheet(55/81 Pages) GIGADEVICE

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GD32F310xx Datasheet

(2)

For grade 6 devices, TA range= -40°C ~ +85°C. For grade 7 devices, TA range= -40°C ~ +105°C.

4.11

NRST pin characteristics

Table 4-24. NRST pin characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIL(NRST)(1)

NRST Input low level voltage

2.6 V ≤ VDD = VDDA ≤

3.6 V

-0.5

—

0.3 VDD

VIH(NRST)(1)

NRST Input high level voltage

0.7 VDD

—

VDD + 0.5

Vhyst(2)

Schmidt trigger Voltage hysteresis

—

360

—

Rpu(2)

Pull-up equivalent resistor

—

kΩ

(1)

Based on characterization, not tested in production.

(2)

Guaranteed by design, not tested in production.

Figure 4-4. Recommended external NRST pin circuit(1)

NRST

VDD

Ext ernal reset circuit

RPU

10 k

VDD

GND

100 nF

(1)

Unless the voltage on NRST pin go below

VIL(NRST) level, the device would not generate a reliable reset.

4.12

GPIO characteristics

Table 4-25. I/O port DC characteristics(1)(3)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIL

Standard IO Low level input

voltage

2.6 V ≤ VDD = VDDA ≤ 3.6 V

—

0.3 VDD

5V-tolerant IO Low level

input voltage

2.6 V ≤ VDD = VDDA ≤ 3.6 V

—

0.3 VDD

VIH

Standard IO High level

input voltage

2.6 V ≤ VDD = VDDA ≤ 3.6 V

0.7 VDD

—

5V-tolerant IO High level

input voltage

2.6 V ≤ VDD = VDDA ≤ 3.6 V

0.7 VDD

—

VOL

Low level output voltage

for 8 IO Pins

(each IIO = +8 mA)

VDD = 2.6 V

—

0.14

—

VDD = 3.3 V

—

0.13

—

VDD = 3.6 V

—

0.12

—

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